Harry and Meghan's daughter Lilibet, named after Queen Elizabeth II, turns 1

Prince Harry and Duchess Meghan's daughter Lilibet, named after her great-grandmother Queen Elizabeth II, rang in her first birthday as her family visits the U.K. for the queen's Platinum Jubilee

Many members of the royal family wished the 1-year-old a happy birthday on social media Saturday, including her great-grandmother and namesake. 

"Wishing Lilibet a very Happy 1st Birthday," Buckingham Palace's account tweeted.

Grandparents Prince Charles and Duchess Camilla tweeted a similar message, also wishing "a very happy 1st." 

Young Lilibet's uncle and aunt also gave wishes from the Duke and Duchess of Cambridge account. 

Prince William and Duchess Kate wrote, "Wishing a very happy birthday to Lilibet, turning one today!"

Prince Harry, Duchess Meghan offer first glimpse of Lilibet Diana.

Born June 4, 2021, in California, Lilibet "Lili" Diana Mountbatten-Windsor is named after the queen, whose nickname is Lilibet. Her middle name "was chosen to honor her beloved late grandmother, The Princess of Wales," the Sussexes explained in a statement at the time. 

"It is with great joy that Prince Harry and Meghan, The Duke and Duchess of Sussex, welcome their daughter, Lilibet 'Lili' Diana Mountbatten-Windsor, to the world," read a statement provided to USA TODAY by the couple's representative at the time. "Both mother and child are healthy and well, and settling in at home. … The Duke and Duchess thank you for your warm wishes and prayers as they enjoy this special time as a family." 

Harry and Meghan announced last month that their family would travel to the U.K. for the Platinum Jubilee, though they didn't stand on the balcony with the rest of the family because they aren't working royals but are free to attend events. 

“Prince Harry and Meghan, the Duke and Duchess of Sussex, are excited and honored to attend the queen’s Platinum Jubilee celebrations this June with their children,” a spokesperson for the couple said.

On Friday, the couple was photographed holding hands while entering St. Paul's Cathedral for the Platinum Jubilee service of thanksgiving. Previously, Harry and Meghan's private April visit with the queen before the Invictus Games marked the first time they'd returned to their old home since leaving in March 2020, but Friday was their first public appearance in festivities marking the monarch's 70 years on the throne. 

It's been six months since the public's last glimpse at Lilibet. In December, Harry and Meghan released a holiday card featuring their family of four. Photographer Alexi Lubomirski took the photo at the family's residence in Santa Barbara, California, last summer.

"This year, 2021, we welcomed our daughter, Lilibet, to the world," the card reads.

"Archie made us a ‘Mama’ and a ‘Papa’, and Lili made us a family. As we look forward to 2022, we have made donations on your behalf to several organizations that honor and protect families – from those being relocated from Afghanistan, to American families in need of paid parental leave." A list of organizations follow, including Team Rubicon, which shared the photo on its Instagram page.

More:Prince Harry, Duchess Meghan offer first glimpse of Lilibet Diana: See the precious holiday photo

"Wishing you a happy holiday season and a prosperous New Year, from our family to yours!" the message concludes.

Contributing: Elise Brisco and David Oliver